<!-- <nz-input-group nzCompact>
  <nz-select [ngModel]="'中国'" style="width: 30%;">
    <nz-option [nzLabel]="'中国'" [nzValue]="'中国'"></nz-option>
  </nz-select>
  <nz-cascader [(ngModel)]="onArea" (ngModelChange)="onChangeArea($event)" [nzOptions]="options" style="width: 70%;"></nz-cascader>
</nz-input-group> -->

<p>select area works</p>